British Broadcasting Corporation and BBC Worldwide Ltd. ; producer, Roderick Graham ; writers, John Hale ... [and others] ; directors, Claude Whatham .. [and others].
Warner Bros. Pictures Inc. ; Jack L. Warner in charge of production ; a Warner Bros.-First National picture ; executive producer, Hal B. Wallis ; associate producer, Henry Blanke ; screen play by Howard Koch and Seton I. Miller ; directed by Michael Curtiz